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INSTALLATION,
OPERATION &
MAINTENANCE
GUIDE
Headquarters
291 Hurricane Lane
Williston, VT 05495
TEL: (802) 878-8307
FAX: (802) 878-2479
STYLE 78HT
Brazil
Rua Javaés, 441/443
Bom Retiro, Sao Paulo
Brazil CEP 01130-010
TEL: 55-11-3736-7373
FAX: 55-11-3736-7355
Gulf Coast
1719 South Sonny Avenue
Gonzales, LA 70737
TEL: (225) 484-0007
FAX: (225) 341-8922
Texas
Houston
7545 E. Orem Drive
Houston, TX 77075
TEL: (832) 804-7424
Odessa
801 S. Pagewood Avenue
Suite 2, Odessa, TX 79761
TEL: (432) 300-0167
REVISED: September 2022
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Summary of Contents for Flexaseal 78HT
- Page 1 INSTALLATION, OPERATION & MAINTENANCE GUIDE STYLE 78HT Headquarters Brazil Gulf Coast Texas 291 Hurricane Lane Rua Javaés, 441/443 1719 South Sonny Avenue Houston Williston, VT 05495 Bom Retiro, Sao Paulo Gonzales, LA 70737 7545 E. Orem Drive Brazil CEP 01130-010...
- Page 2 NOTICE Flexaseal does not assume responsibility for misuse, or any damages incurred as a result of the misuse of the supplied sealing system. Contact a Flexaseal representative before making any changes to the provided system or design.
- Page 3 Installation, Operation, & Maintenance Guide Style 78HT PREPARATION edges, and set screw damage using fine emery • Verify that equipment has been properly cloth. Wipe clean. shut off and rendered inoperative according to plant safety protocol (e.g. lockout/tagout Avoid making flat spots or reducing the procedures).
- Page 4 Installation, Operation, & Maintenance Guide Style 78HT VERIFICATION Successful operation of a Style 78HT seal is contingent on conforming equipment dimensions and alignment. Verify the following prior to continuing: Figure 2: Shaft Runout Figure 3: Bearing Fit Figure 4: Bearing Frame...
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Page 5: Seal Installation
Installation, Operation, & Maintenance Guide Style 78HT SEAL INSTALLATION Style 78HT High Temperature Dual/Tandem Rotating 4. Remove the drive collar cap screws and collar Welded Metal Bellows Cartridge Seals require a from the seal assembly. similar installation procedure as other Flexaseal The seal will be shipped from Flexaseal cartridge seals with the addition of a few minor steps. - Page 6 The following steps briefly describe the methods in which a buffer/barrier system should be piped and set up to support a double cartridge seal. Consult Flexaseal for specific applications and details. 1. Correctly make connections between the buffer/barrier fluid system and the mechanical seal according to the connection labels on the prints.
- Page 7 Installation, Operation, & Maintenance Guide Style 78HT Use thread sealant instead of thread tape. Thread tape has been known to break apart and enter the buffer/barrier fluid stream, resulting in damage to and premature failure of the mechanical seal. Ensure that all tubing/piping is free of pipe strain, which can adversely affect the seal.
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Page 8: Before Starting The Equipment
Installation, Operation, & Maintenance Guide Style 78HT BEFORE STARTING THE EQUIPMENT 1. Ensure the pump shaft is properly aligned at 6. Ensure all plumbing and venting for the seal the coupling with the motor. and seal support system are free of obstruction and that the chamber is filled with liquid. -
Page 9: Removing The Seal
Installation, Operation, & Maintenance Guide Style 78HT DECOMMISSIONING EQUIPMENT When decommissioning equipment it is important to ensure that the pump has been fully isolated from the process and power sources for personnel safety. Pressure and fluid should be fully released before disassembly of the equipment is to begin. - Page 10 SEAL PRODUCTS Flexaseal Engineered Seals and Systems, LLC (hereinafter referred to as "FAS") warrants that new goods manufactured by FAS (with the exception of "wear parts" or consumables all of which are not warranted) will be free from defects in material and workmanship (the “Warranty”).